Can silicon applied to correct soil acidity in combination with Azospirillum brasilense inoculation improve nitrogen use efficiency in maize?

Galindo, Fernando Shintate; Pagliari, Paulo; Buzetti, Salatiér; Rodrigues, Willian Lima; Santini, José Mateus Kondo; Boleta, Eduardo Henrique Marcandalli; Rosa, Poliana Aparecida Leonel; Nogueira, Thiago Assis Rodrigues; Lazarini, Edson; Filho, Marcelo Carvalho Minhoto Teixeira

doi:10.1371/journal.pone.0230954

Cited by 21 publications

(11 citation statements)

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“…Besides, there were high correlations (0.89-0.98) between Si and nutrient concentrations in the diagnose leaf. Silicon fertilization has been shown to increase N uptake and efficient use in several crops (Galindo et al 2020;Oliva et al 2020). Xu et al (2018) reported a 10 to 18% increase in leaf N concentration of legume and grass species amended with 210 kg ha −1 N plus 40 kg ha −1 H 4 SiO 4 .…”

Section: Discussionmentioning

confidence: 99%

Amorphous Silica-Based Fertilizer Increases Stalks and Sugar Yield and Resistance to Stalk Borer in Sugarcane Grown Under Field Conditions

Oliva

Silva

Araújo

et al. 2021

J Soil Sci Plant Nutr

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Silicon (Si) fertilization can mitigate biotic and abiotic stresses and increase the yield of sugarcane. Considering the low availability of Si in tropical soils and the large amounts of fertilizer required by Si accumulating crops, concentrated sources of Si with good solubility may lead to more profitable fertilization management. In this context, we assessed the potential of an amorphous silica-based fertilizer (ASF) on increasing the soil availability and uptake of Si by sugarcane, the growth parameters, the stalk and sugar yields, and the damage caused by stalk borer (Diatraea saccharalis F.). Additionally, Si effects on the accumulation of nutrients by sugarcane were evaluated. The field trial was carried out in a randomized block design with four replications. The ASF was applied at five rates (0, 125, 250, 500, and 750 kg ha −1 ). The evaluation of the plants was performed 12 months after planting. Silicon available content in the soil layers assessed (0.0-0.2 m and 0.2-0.4 m) increased with Si fertilization. The Si concentrations in leaves and stalks were up to 5-and eightfold higher in ASF-amended plants than the control. The Si fertilization increased N, P, K, Ca, Fe, Mn, Cu, and Zn concentrations. Sugarcane growth parameters showed a positive relationship with Si in plants; the height and stalk diameter and the dry leaf biomass were 50, 58, and 71% higher in the 750 kg ha −1 ASF compared to the control, respectively. ASF also increased the contents of fiber, total sugar, and recoverable sugar. The accumulation of Si in the stalk reduced significantly the damage caused by the stalk borer. The ASF rates increased the yield of stalks, total and recoverable sugar, and the stalk borer's resistance, having great potential to boost sugarcane performance in Si-depleted soils in northeast Brazil.

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Section: Discussionmentioning

confidence: 99%

Amorphous Silica-Based Fertilizer Increases Stalks and Sugar Yield and Resistance to Stalk Borer in Sugarcane Grown Under Field Conditions

Oliva

Silva

Araújo

et al. 2021

J Soil Sci Plant Nutr

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“…Silicon (Si) is the second most abundant element after oxygen in the Earth’s crust, comprising approximately 29% (28.8% wt) of the Earth’s crust [ 1 , 2 , 3 ]. Although Si is considered a quasi-essential element rather than a plant nutrient, it is increasingly being applied in agricultural systems worldwide [ 2 , 3 , 4 , 5 ]. Silicon content in the soil ranges from almost 1 to 45% depending on soil types [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Silicon Amendment Enhances Agronomic Efficiency of Nitrogen Fertilization in Maize and Wheat Crops under Tropical Conditions

Galindo

Pagliari

Rodrigues

et al. 2021

Plants

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Sustainable management strategies are needed to improve agronomic efficiency and cereal yield production under harsh abiotic climatic conditions such as in tropical Savannah. Under these environments, field-grown crops are usually exposed to drought and high temperature conditions. Silicon (Si) application could be a useful and sustainable strategy to enhance agronomic N use efficiency, leading to better cereal development. This study was developed to explore the effect of Si application as a soil amendment source (Ca and Mg silicate) associated with N levels applied in a side-dressing (control, low, medium and high N levels) on maize and wheat development, N uptake, agronomic efficiency and grain yield. The field experiments were carried out during four cropping seasons, using two soil amendment sources (Ca and Mg silicate and dolomitic limestone) and four N levels (0, 50, 100 and 200 kg N ha−1). The following evaluations were performed in maize and wheat crops: the shoots and roots biomass, total N, N-NO3−, N-NH4+ and Si accumulation in the shoots, roots and grain tissue, leaf chlorophyll index, grain yield and agronomic efficiency. The silicon amendment application enhanced leaf chlorophyll index, agronomic efficiency and N-uptake in maize and wheat plants, benefiting shoots and roots development and leading to a higher grain yield (an increase of 5.2 and 7.6%, respectively). It would be possible to reduce N fertilization in maize from 185–180 to 100 kg N ha−1 while maintaining similar grain yield with Si application. Additionally, Si application would reduce N fertilization in wheat from 195–200 to 100 kg N ha−1. Silicon application could be a key technology for improving plant-soil N-management, especially in Si accumulator crops, leading to a more sustainable cereal production under tropical conditions.

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“…Azospirillum brasilense also has been reported to reduce abiotic and biotic stresses by inoculant × plant × environment interactions (Bashan & de-Bashan, 2010;Salvo et al, 2018). Literature on the interaction between PGPR inoculation and Si application has increased over the last few years (Chandrakala et al, 2019;Etesami, 2018;Galindo et al, 2020aGalindo et al, , 2020bMahmood et al, 2016). Etesami (2018) concluded the associated use of PGPR and Si can be a sustainable and powerful strategy to improve plant growth under adverse conditions.…”

Section: Core Ideasmentioning

confidence: 99%

“…Literature on the interaction between PGPR inoculation and Si application has increased over the last few years (Chandrakala et al., 2019; Etesami, 2018; Galindo et al, 2020a, 2020b; Mahmood et al., 2016). Etesami (2018) concluded the associated use of PGPR and Si can be a sustainable and powerful strategy to improve plant growth under adverse conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Silicon (Si) is the second most abundant element after oxygen in the Earth's crust, comprising approximately 28% of the Earth's crust (Haynes, 2019;Luyckx et al, 2017;Wang et al, 2017). Although Si is considered as a beneficial rather than an essential plant nutrient, it is increasingly being applied to agroecosystems (Galindo et al, 2020a(Galindo et al, , 2020bHaynes, 2019;Wang et al, 2017). The cultivation and harvest of Siaccumulating crops are responsible for a constant depletion of the Si reservoir in soils (Vandevenne et al, 2012), leading to a decrease in the bioavailability of Si (Guntzer et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Nutrient availability affected by silicate and Azospirillum brasilense application in corn–wheat rotation

et al. 2021

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The interactive effectof silicon (Si) application on soil fertility is poorly understood when inoculation with Azospirillum brasilense is performed. This research determined if Si application and A. brasilense inoculation to corn (Zea mays L.) and wheat (Triticum aestivum L.) has agronomic benefits on soil nutrient concentration and grain yield. Treatments were tested under a no-till system in a Rhodic Haplustox in a full factorial design with four replicates and comprised (a) two soil amendment sources-calcium (Ca) and magnesium (Mg) silicate and dolomitic limestone; (b) with and without seed inoculation with A. brasilense; and (c) five sampling dates collected during two corn-wheat crop rotations (2015)(2016)(2017). Calcium and Mg silicate application was effective at decreasing soil hydrogen + aluminum (H+Al) and Al content and increasing soil pH, sum of bases, and base saturation. However, silicate changed soil nutrient availability, reduced cation exchange capacity, phosphorus (P) and Mg content and did not significantly affect (p > .05) corn and wheat grain yield. Inoculation reduced Al toxicity, with lower H+Al and Al contents, and increased K content, leading to a greater pH and base saturation after four cropping seasons. Inoculation increased corn and wheat grain yield by 8.2 and 8.3%, respectively. Application of Ca and Mg silicate was more effective than limestone as a liming agent but could result in decreased availability of certain nutrients in soil.

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Can silicon applied to correct soil acidity in combination with Azospirillum brasilense inoculation improve nitrogen use efficiency in maize?

Cited by 21 publications

References 58 publications

Amorphous Silica-Based Fertilizer Increases Stalks and Sugar Yield and Resistance to Stalk Borer in Sugarcane Grown Under Field Conditions

Amorphous Silica-Based Fertilizer Increases Stalks and Sugar Yield and Resistance to Stalk Borer in Sugarcane Grown Under Field Conditions

Silicon Amendment Enhances Agronomic Efficiency of Nitrogen Fertilization in Maize and Wheat Crops under Tropical Conditions

Nutrient availability affected by silicate and Azospirillum brasilense application in corn–wheat rotation

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